4
440A-body
I have a couple of questions about blasting media and knew this was the place for straight answers.
Here is a little background. Friend has a '68 Chevelle that is in need of a quarter panel and some other rust repair in the truck area, lower rear window channel. That is the easy part. The hard part...it is painted with what I can only describe as silly putty. When you touch it with any kind of abrasive to remove it just smears, and gums up the paper, disc, or what ever you put against it. Even tried the fiber type stripping discs (as well as 3M green corp 80 grit)on my buffer at low speed with the same results.
So with that being said I am considering using walnut shell as my blasting media. What are the pro and cons? I know that any media can warp panels, and that some medias(soda in particular)are a nightmare to neutralize. I really don't want to use a chemical stripper as they can come back and bite a guy in the butt also. Not to mention the mess, disposal and repeated washing to only wonder if I got it all out of the cracks and crevices.
Next question. Will it work in a conventional pressure pot type blaster. If not, what size tip do I need? Also what grit does a guy use, just for paint removal? Not looking for rust and corrosion removal. Will do that after the paint is gone.
Thanks for the advice in advance, an if there is a better way, then I'm all for it!
Here is a little background. Friend has a '68 Chevelle that is in need of a quarter panel and some other rust repair in the truck area, lower rear window channel. That is the easy part. The hard part...it is painted with what I can only describe as silly putty. When you touch it with any kind of abrasive to remove it just smears, and gums up the paper, disc, or what ever you put against it. Even tried the fiber type stripping discs (as well as 3M green corp 80 grit)on my buffer at low speed with the same results.
So with that being said I am considering using walnut shell as my blasting media. What are the pro and cons? I know that any media can warp panels, and that some medias(soda in particular)are a nightmare to neutralize. I really don't want to use a chemical stripper as they can come back and bite a guy in the butt also. Not to mention the mess, disposal and repeated washing to only wonder if I got it all out of the cracks and crevices.
Next question. Will it work in a conventional pressure pot type blaster. If not, what size tip do I need? Also what grit does a guy use, just for paint removal? Not looking for rust and corrosion removal. Will do that after the paint is gone.
Thanks for the advice in advance, an if there is a better way, then I'm all for it!